Typewriting and like machines



May 6,-1941. G. E. BAUDER TYPEWRITING AND LIKE MACHINES Filed sept. Y22;1938' 2 Sheets-Sheet 1 R m w. w

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May 6, 1941.

G. E. BAUDER TYPEWRIVTING AND LIKE MACHINES Filed Sept. 22, 1958 2svneetsesheex 'zev me/Wto@ GLEN/v E, BAUDER @Haz/wu! Patented May 6,1941 2,240,477 l TYPEvvnrriNe AND LIKE MACHINES Glenn E. Baudet, Elmira,N. Y., assignor to Remington Rand Inc., Buffalo, N. Y.`, a corporationof Delaware Application September 22, 1938, Serial No. 231,183

' 4 claims. (ci. 197-33) My invention relates. to typewriting and likemachines, and more particularly to improvedV A more specic objects of myinvention is to4 provide means for regulating the operating touch by animproved mechanism for adjusting the tension or effective force of asingle spring means which is stressed at each operation of any typeaction.

A further object oi my invention is to provide a touch regulating meansof the character specied wherein the variable tension or effective forceof the spring means acts uniformly on all of the type actions but isineffective thereon during the initial portion of the operation of eachtype action. A

A still further object of my` invention is to provide a controllingmeans for adjustingthe tension or effective force of returning springmeans stressed by the operation of any of the type actions and toprovide certain deiinite predetermined positions of adjustment in whichthe controlling means may be retained against the force of said springmeans. y Y

A still further object of my invention is to provide an improved meansfor indicating the position of adjustment of the touch regulatingvmechanism. l

To the above and other ends, which will hereinafter appear, my inventionconsists in the features of construction, arrangements of partsv theparts shown in Fig. 2, the view being takeny on line 3--3 of Fig. 2 andviewedin the direction of the arrows at said'line.

4few changes in the existing structure.

I have shown my invention embodied in the present instance in a No. 5Remington` portable machine in which the devices of the presentinvention may be readily incorporated with but However, it is to beunderstood that my invention is not restricted to embodiment in suchmachine, but may be employed invarious other types of typewriting andlike machines wherever found available. l

I have shown in the accompanying. drawings only so much of theusualconstruction of the No. 5 Remington portable machine as is, necessary toarrive at an understanding of my invention and its embodiment therein.

The frame of the present machine includes the usual side plates 5 whichare joined by the usual cross members and the type bar segment, notshown. The front ends of the side plates 5 are connected to a key leverguide comb 1 attached thereto at 8. The upper portions oi the sides andfront of the machine are enclosed by a top plate I0 which may beregarded as a part of the frame of the machine. This top plate isremovably secured to a bracket I2-by screws I3, as shown in Fig. 2. Thelower portion. of the bracket I2 is attached by screws I4 to the upperportion of the key lever guide comb I which may likewise be regarded asa part of the Aframe.

A full complement of type actions is mounted within the frame of themachine in the usual manner by means which are not shown.

It may be brieiiy described that each type ac- Vtion includes the typebar I8 operable about a pivot wire I9 to bring one or the other of types20 on the bar to the printing point, depending on the case position ofthe usual platen 2l. Each type bar I8 is moved to the printing positionby `a companion sub-lever 22` having a toothed portion 23 at the rearend thereof meshing with teeth 24 on the heel of the associated typebar. Each sub-lever is mounted intermediate its ends on a pivot 25, andthe front end of each sublever 22 is pivotally connected by a pull wire25 to a companion key lever 21. The rear end of leach key lever 21 ispivotally mounted at 28 and the forward end portion thereof extendsthrough Aa companion vertical slot in the guide comb 1. fIhe upwardlyextending forward end of each key lever is provided with a key 3D in theusual manv ner. Each type action is returned to normal position by acontractile spring 32 connected at one end to the companion sub-lever 22and at .Y its other end to `a common anchor member 33.

of the spring 50. This member 58 is formed by a segmentally shaped platehaving an open ended bearing recess or seat 55 at the lower end thereofwhich receives the lstern portion of a headed pivot pin 59a which issecured at the reduced diameter front end thereof to the central portionof the bracket I2.

lAn operative connection is provided between the control member 58 andthe anchor arm 53 for effecting an upward movement of the arm 53 aboutits pivot 54 against the force of the spring 50 by a clockwise movementof the member 58 shown, the universal bar mechanism is arranged foroperation by each of the key levers 2'I..

This universal bar mechanism includes a uni-A versal bar 40 extendingtransversely of the machine beneath all of the keylevers 2'I, and isrigidly connected at the opposite ends thereof to arms 4l which carrypivot pins 42 that enter bearing holes in the side 4plates 5. A channelmember 43 extends between the universal-bar arms 4I and is rigidlyattached thereto by screw 44, shown in Fig. 1, to provide a rigid framewhich is operable uniformly about the pivots 42 by any one of the keylevers 21. In orderto simplify the present disclosure, the `carriageescapement and the ribbon feed and vibrator mechanisms and theiroperating -connections to the universal bar frame have not been shown inthe accompanying drawings, but it is to be understood that .all of suchmechanism may -be -of the usual construction employed in the No. 5Remington portable machine and connected to the transverse channelmember 43 f-or operation thereby in the usual manner. From certainaspects of my invention the universal bar need not be operative .toactuate ribbon feed and/or other mechanism inasmuch as its function inconjunction with the touch regulating means is not dependent on thisfactor. The spring returned universal bar alone may be employed in someinstances without connection Ito ribbon feed or other means foroperation thereby. Y

Referring to Fig. 1, it may be seen that the normalposition of theuniversal vbar frame is determined by the engagement of a rearwardlyextending portion 46 of one of the arms 4| with a iixed bracket 41carried by the frame of the machine. The universal bar mechanism isreturned to and held in such normal position by a contractile spring 5Uhaving the lower endv thereof connected at 5I to .the universal Vbar 40intermediate the ends thereof.

Touch regulating means are provided in accordance with the presentinvention by an improved means for varying the tension or the effectiveforce of the spring 50 on the universal bar mechanism. Thus, the upperend `of rthe spring 58 is connected at 52 to the downwardly andrearwardly extending end of an anchor or tension 'adjusting arm V53.This arm extends transversely of the machine in the rear of the frontportion of the frame of the machine and is pivotally mounted at one endon a shouldered pin 54 having a reduced diameter portion riveted to thebracket I2. Referring to Fig. 3, it may be seen .that the shoulderedportion 548L of the pin 54 serves to space the anchor arm 53 rearwardlyfrom the bracket I2, and the arm 53 is retained ont he pin 54 by aspring clip member 55 received by an annular groove in the rear endportion of the pin 54.

A manually adjusted control member or cam 58 is provided for adjustingthe position of the anchor arm 53 about its pivot 54 to vary the tensionabout its .pivot 59, which operative connection is so constructed andarranged that the control member 58 may be retained in any one ofseveral Apredeternriined positions of adjustment against the force ofthe spring 50. Thus, a headed pin 60 is riveted at a reduced diameterrear end portion thereof .to the anchor arm 53, intermediate the endsthereof. The stem of the pin 60 engages the lower wall 5810i an opening6I provided in the control member 58. From a consideration of Fig; 2 itwill be seen that the general contour .of the wall 58a is eccentric tothe pivot 59a-so as to form a cam. This cam 5i!EL is engaged by the bodyportion of the pin 60 land is provided with a plurality of depressions62 forming shallow detent recesses or notches. The pinV 60 is sopositioned on the arm 53 that the downward force exerted by .the pin 60against the cam 58a through the action of the spring 50 is substantiallyagainst the dead center of the control member 58. That is, this forceacts substantially on a radial line with respect to the pivot 59a of themember 58. In this manner, the force of the spring 5B not only can'- notcause Ia turning movement of the control member 58 butdue to the factthat the pin 60 engages in the shallow detent notches 62 will hold thecontrol member in any predetermined position kof adjustment determinedby'said notches. f

It will thus be clear that inasmuch as each of the detent notches 62 inthe cam 58aA is positioned a progressively greater distance from thepivot 59a, a clockwise pivotal movement of the control member 58 fromits position shown in Fig. 2 will cause the left hand endof the anchorarm 53 to move upward and thereby increase the tension of the spring 50.On the other handa movement of the control member in the oppositedirection will decrease the tension of the spring 50.

Referring .to Fig. 1, it will be seen that the upper portion of theVcontrol member 58 is positioned directly in the rear of the verticallydisposed portion of the top plate I0, and about midway between the sidesof the machine as indicated in Fig. 2. Accordingly a means for affordingconvenient manual adjustment of the member 58 is provided by a fingerpiece in the form of a round -pin or knob S5 ysecured to the front faceof the upper portion of the member 58 and extending forward through anarcuate slot 66 in the top plate I 0'. Thus, the operator mayconveniently adjust the nger piece I65 back and forth vin the slot 66 tovary the tension of the spring 50. x Y

A means for indicating the various positions of adjustment of thepresent touch regulating mechanism is provided by suitable indices suchfor example, as numerical indices 1, 2, 3, 4 and f5 marked on the front'surface of the control member 58. Only one of these indices is visibleat each position of the control rmember 58 through an opening formed bya semi-circular notch 51 at "the central portion of 'the lower wallofthe slot 66 inthe top :platev III'. The indices in the present instanceare shown suitably marked on the face Vof the `memsponding detent notch62 formed in the control-v member 58.

In` order that the control member 58 may be properly supported andguided on the bracket I2 in the movement of the members 5B to differentpositions of adjustment, I have provided in addition to the headed pivot59EL two headed pins 68 and 69 secured to the bracket I2 and having theheads thereof overlapping the upper segmental edge of the controlmember.

It will be seen that the axes of the pivots 54 and 59a, as well as theaxis of the pin 60, are horizontally disposed in parallel arrangementand extend fore and aft of the machine and that a simple inexpensiveeifective and compact construction comprising but two parts, oneoperative directly on the other, is provided. The touch regulatingmeans, it will be observed, is confined within a narrow space back ofthe front of the machine where it does not interfere with any of theother working parts of the machine and where it is readily accessible tothe operator for adjustment.

It will be seen, moreover, that the entire touch regulating means withthe supporting bracket I2 may be introduced into or removed from themachine as a single unitary construction, subject to a connection of thespring 50 to or a disconnection thereof from the arm 53. Thus, byremoving the screws I3 and I4, and such other screws as hold the topplate I in position, :the entire touch regulating means, together withthe supporting bracket I2, may be removed after the spring U isdisconnected.

Should it be found desirable to remove the top plate I0 without removingthe touch regulating means, it is merely necessary to remove Ithe screwsI3 and such other screws as hold the top plate in position. This enablesthe top plate to be removed independently of the bracket I2 and thetouch regulating means supported thereon.

It is apparent from what has been pointed out that the assembly of thetouch regulating means outside of the machine and its introduction as asingle unit into the machine may be readily effected at a comparativelysmall cost.

Referring to Fig. 1 it will be understood that the key levers 21 for thedifferent banks of keys have depending projections 2la that engage theseparate bendably adjustable contact members IMIa on the universal bar40. It will be understood, moreover, Ithat there are varying extents oflost motion between the projections 2la and the contact members Il()SLdepending on the extent of the dip of the key levers 21 at these points,It followsy therefore that due to such lost motion the force of thespring 50 during the initial portion of the printing movement ofdifferent type actions is not exerted against them and the force of theassociated returning spring 32 alone need be overcome by the keydepression. It results therefore that an initial easy start of each typeaction may be eiiected and it is not until the parts thereof have beenset in motion that the resistance of the spring 50 becomes eiective. Itis important, however, that the force of the spring 5U shall beeffeculating means.

tive during the latter portion of the printing movement .of each typeaction and that it shall exert an equal force against all type actionsas determined by the adjustment of the touch regthe additional force ofthe spring 50 operative to bring about auquick return of each type barfrom its V printing position and thereby reduce.

the liability of collision between the type bars in" the danger zonenear the platen and without having the force of the spring 50 exerted ineach instance against a type action throughout its entire printingmovement.

From the foregoing description it Will be understood that I haveprovided a simple, compact, inexpensive and highly effective means forattaining the purposes pointed out.

Various changes may be made in the construction, and some of thefeatures thereof may be employed without others, without departingV rommy invention as it is defined in the accompanying claims.

What I claim as new and desire to secure by Letters Patent is:

l. In a typewriting machine, the combination of type actions includingprinting keys, spring means exerting a resistance to the actuation ofsaid type actions, and touch regulating means for increasing ordecreasing the force of said spring means thereby varying the touch onthe printing keys, said touch regulating means comprising a pivotedmanually set controlling member, and a tensioning member cooperatingwith said spring means and controlling member, said last mentionedmember being provided with a cam having detent recesses in which a partof the tensioning member may be received to hold it in any position towhich it is adjusted by said cam.

2. In a typewriting machine, the combination of type actions includingprinting keys, a universal bar actuated thereby, a spring for returningsaid universal bar to normal position, and touch regulating means forvarying the touch on the printing keys comprising a pivoted manually setcontrolling member having a cam with extreme and intermediate detentnotches in the face thereof, and a pivoted tensioning memberconstituting an anchor to which one end of said spring is attached andhaving a part thereof that coacts with said cam and detent notches foradjustment towards and from the pivotal center of said controllingmember for varying the position of the tensioning member and for holdingit and the controlling member in any of the positions of adjustmentdetermined by said detent notches.

3. In a typewriting machine, the combination of type actions includingprinting keys, a universal bar actuated thereby, a spring for returningsaid universal bar to normal position, and touch regulating means forvarying the touch on the printing keys comprising a pivoted manually setcontrolling member mounted at the front of the machine and having a camthereon, indexing means for indicating diierent positions of adjustmentof said controlling member, and a pivoted arm to which one end of saidspring is anchored, said arm having a part thereof that coacts directlywith said cam and is movable thereby towards and from the pivotal centerof said controlling member for varying the force exerted by said spring.

4. In a typewriting machine, the combination of type actions includingprinting keys, a uni- The eiect of this is to render versal 'baractuated'thereby, a spring for returning said universal bar to normalposition, and touch regulating means for varying the touch on theprinting keys comprising a pivoted manually set controlling membermounted With-l n the machine frame in the rear of the front thereofandhaving a finger piece that extends through an opening in said frame,said controlling member having a cam with both extreme and intermediatedetent notches therein, 10

